Lock.



No. 851,900. PATENTED APR, 30, 1907.

G. E. SGRIBNER;

LUCK.

APPLICATION FILED DEO.7,190'}.

' 2 SHEETS-SHEET 1.

Tux Nmmls PETERS ca, wnsmnarbil. c:

QPATENTED APR. 30. 1907.

C. E. SGRIBNER.

LOOK, APPLICATION FILED DEO.7,19 04.

2 SHEETS-SHEIIT 2.

fnde 77/5071 arieszjozz'iz z' UNITED STATES PATENT OFFICE.

.ELEOTRIO OOMPAN Y, OF OI-IIOAG N OIS.

O, ILLINOIS, A CORPORATION OF ILLI- LOCK.

Specification of Letters Patent.

Patented April 30, 1907.

Apnlication filed December 7,1904. Serial No. 235.839.

To all whom it may concern:

is movably mounted within the frame, and

Be it known that I, CHARLES E. SCRIBNER, means, actuated in the opening of the door, a citizen of the United States, residing at are provided, adapted to move said bar into Jericho, in the county of Ohittenden and a position to prevent the return movement 5 State of Vermont, have invented a certain of the latch bar, locking the same in its open new and useful Improvement in Locks, of position, and so holding the key against rewhich the following is a in 1, clear, concise, moval. The door of the structure is adaptand exact description. ed in closing to effect the movement of the My invention relates to a lock for the door blocking bar to its former or normal position 10 or cover of a box or other structure, and has to permit the latch bar to be moved into enfor its Y object to provide improved means gagement with said keeper to again lock the for preventing the door of the structure from door and permit the removal of the key. being inadvertently left unlocked. The latch bar may be arranged to be auto- The main feature of the invention consists matically moved, when the door is closed to I 5 inthe construction of the lock whereby an withdraw the blocking bar, back to its posiinserted key after operating the lock to pertion of engagement with the keeper to lock mit the opening of the door of the structure the door, and I preferably provide a spring cannot be removed until the lock is rcversely for this purpose, which bears against the latch operated and the door again closed and fasbar and operates to lock the same upon the 20 tened thereby, so that a person after opening withdrawal of the blocking bar.

the structure cannot inadvertently remove I will describe my invention particularly the key and neglect to lock the box. by reference to the accompanying drawings, 7 5

My invention contemplates a lock comwherem prising two members, a latch and a keeper Figure 1 1s a perspective view of a box 25 adapted tobe locked in engagement under equipped with the lock of my invention, the the control of a key, together with means, wall of the box being broken away to show actuated upon the separation of said memthe mechanism of the lock; Fig. 2 is a front bers for preventing the removal of the key elevation of the lock; Fig. 3 is a similar view from the lock. I also provide means, acwith the face plate removed and showing the 3o tuated upon the interlocking of said members latch bar locked in its open position Fig. 4 for releasing the key to permit its removal. is a view of the lock showing the latch bar in The lock may be applied to any desired its closed position in engagement with its structure, such as a box, drawer, or the like, keeper; Fig. 5 is a side view of the lock showand said members serve when in engagement ing the same in position in the side of a box 3 5 to lock the structure against opening, but Fig. 6 is a sectional view thereof on line 66 when said members are separated and the of Fig. 5 and Fig. 7 is a view of a key adaptstructure opened, the key will be held against ed for use in the lock of my invention. removal until the said members are again in The same letters of reference are used to engagement to prevent access to the struedesignate the same parts in the several fig- 0 r ures of the drawings.

In the preferred form of my invention, the Referring to Fig. 1, I have shown the lock lock comprises a pivoted latch bar in a suitof my invention applied to a box A. The 5 able frame secured to a wall of the box or frame a of the lock, which may be boxstructure, and adapted to engage a keeper shaped, is secured to one of the walls of the 45 upon the door or cover to lock the same. box A, preferably on the inner side thereof.

opening is provided of the proper size to Within the frame is )rovided the latch bar or admit a key to the frame, the key bit engagmember I), preferab y pivoted thereto, and I00 ing a portion of the latch bar to move the projecting through an opening in the side of same out of engagement with the keeper, and the frame. The latch bar is adapted when 50 when the bar is in such position another porin the position shown in Fig. 4 to engage a tion of the latch bar serves to prevent the keeper 0 carried by the door or cover a of the return of the key bit to its original position box. The latch bar I) is provided with two 10 5 where it could be removed. A blocking bar portions or projections b 1) between which the bit of an inserted key K is adapted to enter to move the latch bar when the key is rotated, an opening being provided in the wall of the box and the face plate a of the frame to permit the entry of a key. These projections may form in effect an arm (1 for the latch bar having a recess (1 therein which the key bit enters. Thus when the bit is moved to force the latch bar out of engagement with its keeper the rear wall of the recess or the portion b prevents the return movement of the key and its removal from the lock until the latch bar is returned to its locked position.

I accordingly provide a blocking device or movable blocking bar e with means actuated in opening the door for moving the bar into a osition to prevent the return of the latch gar to its normal position. The door is also arranged in closing to return the blocking bar to its former position and permit the latch bar to be moved into engagement with the kee er and allow the key to be removed.

The blocking bar e, which is preferably slidably mounted in the frame, may carry a lug e, and a spring f is adapted when the latch bar is moved to its open position and the door of the box is opened, to move the bar e into a position such that the lug e registers with the end of the arm at and locks the latch bar in its raised or open position.

I provide means for stopping the blocking bar when the lug e reaches the proper point to register with the arm d which means may consist of a pin 9 mounted upon the blocking bar near the end and adapted to engage the side wall of the frame a. I V

The side wall is provided with an opening at the end of the blocking bar, and the door of the case is adapted in closing to engage the end of the bar to move the same to its former or normal position, moving the lug e away from the arm (I and allowing the latch bar to be moved to its locked position. The door preferably carries a pin it, which, when the door is closed, engages the end of said blocking bar to eifect the return movement thereof. This pin may, as in the present instance, be mounted directly upon the keeper 0.

A spring 'L bears against the latch bar, and is adapted when the lug e is withdrawn from engagement with the end of the arm (1 to move the latch bar into engagement with the keeper 0. It will thus be seen that upon closing the door the same will be automatically locked.

A stud k may be carried by the frame a to enter the hollow stem of an inserted key and serve as a support therefor, and one or more segmental guides I may be provided as desired, adapted to ride in the slot or slots of a key bit, this guide serving to guard against the insertion of improper keys.

A stop an is carried by the frame adapted to prevent the rotation of the key in the wrong direction and the consequent operation of the latch bar and-the removal of the key.

By virtue of the construction above described, I am enabled to make a lock which is simple, cheap and very effective and reliable in o oration. The key after moving the latch ar into the open position, is ositively locked in position against remova until the latch bar is returned to its locked position, as when the door is closed, so that the key cannot, through inadvertence, be removed while the door of the structure is unlocked. The door when closed is also automatically locked.

I claim 1. A lock comprising a pivoted latch bar, 3

a keeper adapted to engage the same, an arm carried by said latch bar having a adapted to be engaged by a key bit to move the latch bar out of engagement with said keeper, another portion of said arm preventing the removal of said key while the latch bar is in such position, means for locking the bar in its open osition, and means for restoring the latch ar into engagement with said keeper to release the key.

2. A look comprising a pivoted latch bar, a keeper therefor, said latch bar being adapted to be operated by a key gagement with said keeper, a spring-controlled longitudinally movable blocking bar released upon the separation of said latch bar and keeper to block the latch bar in its open position and prevent the removal of the key, and means adaptedto withdraw said blocking bar and permit the engagement of said latch bar and keeper, whereupon the key may be removed.

A look for the door of a box or other structure, comprising a frame secured to the wall of the structure, a pivoted latch bar within the frame, a keeper u on the door with which said leaf engages to ock the same, an o eningbeing provided for the insertion of a rey within the frame, the bit of the inserted key being ada ted when the key is ro tat-ed to engage said ar and move the same out of engagement with said keeper, a blocking bar movably mounted within the frame, means operative as the door is opened for moving said blocking bar to block said latch bar and key in the positions to which they have been moved, whereby an inserted key cannot be Withdrawn while the door is un locked, and means actuated in closing said door ada ted to move said blocking bar to ermit t e return movement of said latch ar and the release of said key.

4. A look comprising a pivoted latch bar, a keeper ada ted to co-operate therewith, a slidable blool ing device operative upon the lifting of said latch bar with said keeper by a key, bar in its ralsed position from engagement to block the latch and prevent. the

to control its enportion ITO withdrawal of said key, and means actuated as said latch bar and keeper re-engage to withdraw said blocking device and permit the removal of said key.

5. A lock comprising a latch bar, a keeper adapted to engage the same, the engagement of said latch bar and keeper being controlled by a key, and a spring actuated slidable blocking bar operative upon the separation of said latchv bar and keeper adapted to prevent the withdrawalof said key.

6. A lock for the door of a box or other structure,comprising a frame secured to a wall of the structure, a pivoted latch bar within the frame, a keeper u on the door with which said bar engages to ock the same, an opening being provided for the insertion of the key within the frame, an arm carried by said latch bar having a portion adapted to be engaged by a key bit to move the latch bar out of engagement with said keeper, another portion of said arm preventing the removal of the key while the latch bar is in such position, a slide bar and. a lug carried thereby, a spring adapted upon the opening of said door to move said slide bar and bring said lug in engagement with said arm, means for limiting such movement of said bar, the door being arranged in closing to move said slide bar to its normal position, whereby the latch when moved to open the door is blocked in position to prevent the removal of the key.

7. A look for the door of a box or other structure, com rising a frame secured to an inner wall of t e structure, a pivoted latch bar within the frame, a keeper carried by the door with which said bar engages to lock the door, an o ening being provided through the wall for t e insertion of a key within the frame, an arm carried by said latch bar hav ing a recess to receive the bit of a key, the bar being adapted to be moved by such bit out of engagement with the keeper, said key being adapted to be held by the bar, when in such position, against removal, a blocking bar slidably mounted in said frame, a lug carried by said bar, a spring adapted upon the opening of the door to move said slide bar and bring said lug under said arm to lock the latch bar in its open position, a stud car ried by said bar and engaging the frame when the bar is moved to limit the movement of said bar, a pin carried by the door ada ted upon the closing thereof to return said bar to normal position, and a spring adapted upon the removal of said lug to move the latch bar into engagement with said keeper.

8. A look for the door of a box or other structure, comprising a frame secured to the wall of said structure, a pivoted latch bar within the frame, a keeper upon the door with which said bar engages to lock the door, an opening being provided for the insertion of a key within the frame, a supportingstud carried by the frame adapted to enter the stem of such key, a segmental guide carried by the frame adapted to enter a slot in the bit of the key to guard against the insertion of an improper key, said bar having portions between which the key bit is inserted, said bit when the key is rotated moving the latch bar out of engagement with said keeper, and being held between said portions against removal, a stop carried by the frame preventing the rotation of the key in the wrong direction, a blocking member movably mounted within the frame, means operated as the door is opened for moving said member to block the latch bar in its open position, and means operated in closing said door for moving said blocking member to permit the return movement of the latch bar.

9. A lock for the door of a box or other structure, comprising a frame secured to a wall of the structure, a pivoted latch bar within the frame, a keeper upon the door with which said bar engages to lock the same, an o ening being provided for the insertion of a rey within the frame, a portion of the bar being adapted to be engaged by a key bit to move the latch bar away from said keeper, another portion of the latch bar being adapted to block the return movement of the key bit in such position of the bar, mechanism operative upon the opening of the door of the structure adapted to block the latch bar in its open position, means operative upon the closing of the door for withdrawing said mechanism, and means actuated upon the withdrawal of said mechanism adapted to move said latch bar into engagement with said keeper; whereby upon closing the door the same is automaticallylocked and the key made removable.

In witness whereof, I hereunto subscribe my name this 12th day of September A. D., 190% CHARLES E. SCRIBNER.

WVitnesses:

FREDERICK A. WATKINS, FREDERICK P. h'loINTosu.

ICC 

